Walki Pack Maximum barrier Minimum material
What is Walki Pack? Base board materials Walki has developed a range of barrier boards for the folding carton market. Carefully selected boards are used to give the required strength and convertion characteristics. These can then be one or two side coated with a suitable polymer to achieve an economic barrier to meet the product requirements. Barrier boards reduce the need for inner wrapping of foodstuffs thereby reducing the amount of packaging used. All our products are tailored to meet customer requirements for cost effective and optimum packaging performance. Depending on the end use application our customers can choose from a variety of baseboards. These are normally selected according to: Strength (stiffness, burst strength and tear resistance) Hygiene (suitability for food contact ) Appearance (surface whiteness, print result, shade of reverse side) Cost Availability For many applications, especially for frozen food, the base board should be hard sized, ie the centre plies will be chemically treated by the board mill to reduce moisture uptake (edge wicking) when used in the fridge or the freezer. Frozen Food Product Water Moisture Vapour Grease Aroma Frozen Fish & Seafood +++ + Frozen Processed Fish ++ ++ ++ Frozen Meat ++ ++ ++ Frozen Processed Meat ++ ++ ++ Frozen Vegetables +++ ++ Frozen Pastries & Cakes ++ ++ ++ Ice Cream +++ ++ ++ Principle board types Folding Boxboard (FBB or GC) Frozen, chilled and ambient food cartons, confectionary, medical and bakery products. Solid Bleached Sulphate (SBS) Cigarettes, paper cups, food packaging and ovenable trays and lids. Coated Natural Kraft (CNK) Frozen food, bakery products, hardware and beverage multipacks. White Lined Chipboard (WLC or GD) Used for packing household goods, secondary packaging and some restricted food products. Greyboard or Unlined Chipboard (ULC) Main uses include rigid boxes, lamination and dividers. s and laminated materials Having decided on the best baseboard we then design the best functional or decorative barrier by using selected polymers such as LDPE, HDPE and PP or by using paper, film or aluminium foil as a secondary web layer. The polymers can be clear or pigmented and are given either a gloss or matt finish depending on the physical characteristics required. Minimum polymer coatweight is 10 gsm to a maximum of 50 gsm on either or both sides of the board. For printing and gluing of the polymer surfaces we apply Corona Treatment to improve adhesion of inks and adhesives. We are also able to offer a biodegradable PE coating, developed to minimise environmental impact. Fresh Food & Non-food Polymer Types Product Water Moisture Vapour Grease Aroma Fresh Pastries & Cakes ++ +++ Biscuits +++ Chocolate ++ Tea +++ Salt +++ Washing Powder +++ Pet Food +++ Moisture Grease Gas Heat Seal Microwave Oven Low Density Polymer ++ + + +++ High Density Polymer +++ ++ + ++ + Polypropylene ++ +++ ++ + ++ + Walki Fast ++ + + ++++ PET Film Laminate ++ +++ +++ + ++++ ++++ Susceptor Laminate ++ +++ +++ + ++++ ++++ Walki Pack BioX ++ + + +++
Product range Combined with a selected Polymer Coating or lamination to Films or Foils then a wide range of functional, decorative and ovenable materials can be produced. Our range includes: coating Aluminium coating Glue PET film transp. coating Special film treatment Bleached paper coating coating Met. PET film Glue/Polymer Clay coated paper Walki Pack Chill and Walki Pack Frost one side polymer coated products for packaging chilled or frozen foodstuffs. Walki Pack Frost Plus two side polymer coated products where extra barrier or high speed heat sealing is necessary. Walki Pack GR polymer coated material for the safe packaging of greasy foods. Walki Pack Foil for take-away food lid, or Walki Pack Foil Plus for high barrier, insulation and other applications. Walki Pack Tray for dual ovenable food trays. Walki Pack Tray Lid for dual ovenable food lids. Walki Pack Aromex for tea and other aroma sensitive products. Walki Pack Soft a laminated grade for products needing a soft and / or absorbent layer. Walki Pack Metalex a lamination of metallised films for decorative or graphic applications. 1 2 3 4 5 Walki Pack D for detergent packaging or Walki Pack D TS including tear strips. Walki Pack Case for lightweight cases, layer pads and dividers. 6 7
We care Hygiene Walki Pack products are generally used for direct contact food packaging. The polymers and any additives used are selected to comply with FDA and European national regulations. A copy of a certificate issued by Walki for individual applications to confirm compliance is available on request. The suitability of the boards and papers used is also likely to be of concern if the only direct food contact is on the exposed cut edges inside a carton. Virgin fibre grades are generally designed to have a wide range of food contact approval. Recycled grades have a limited or zero food contact approval. Our factories employ strictly controlled hygiene conditons during manufacture and we have recently gained the BRC/IOP Certificate of Hygiene for our Steinfurt factory. Innovation Walki has developed a standard range of functional, barrier and decorative laminates and coatings. By constant monitoring of the market demands and in partnership with many of our customers and using our extensive R&D facility in Pietarsaari Finland, we are developing new combinations and polymers to meet the requirements of economy and performance. Environment Walki s Walki Pack range is intrinsically ecofriendly as it provides Maximum Barrier with Minimum Materials. All boards used are produced either from fibre obtained from sustainably managed forests or from recycled paper fibre. Most of our products can be recycled to recover the paper and polymer content and our new products, soon to come on stream, will be fully compostable. A number of mills in various countries are equipped to use polymer coated board as a major raw material source. However, Walki Pack products can also be recycled for energy recovery by incineration. The hydrocarbon polmers used burn without harmful emissions to give water and carbon dioxide only.
Walki in brief Walki produces wrappings for the paper and metal industries, food and consumer packaging materials, decorative and functional laminates, barrier liners for solid and corrugated packaging, facings for the insulation and construction industries and solutions for technical applications. Walki s production units in Finland, Sweden, Germany, Poland, the UK and China have annual net sales of about 300 million Euros and a workforce of approximately 1,000 employees. Walki consists of three business areas Reel packaging Paper Packaging Ream wrapping Consumer Layout: Studio PAP. Photo: Pertti Puranen. Print: Forsberg 2009. Barrier board Barrier Lining Technical Products Flexible packaging Heavy duty wrapping Walki Group P.O. Box 40 FI-37601 Valkeakoski, Finland Tel. +358 (0)205 36 3111 Fax +358 (0)205 36 3090 walki@walki.com Insulation and construction facing materials Technical industrial papers www.walki.com